<template>
    <div
            ref="rightPanel"
            :class="{show: show}"
            class="rightPanel-container"
    >
        <div class="rightPanel-background"/>
        <div class="rightPanel">
            <div
                    class="handle-button"
                    :style="{'top': buttonTop+'px','background-color': theme}"
                    @click="show=!show"
            >
                <i :class="show?'el-icon-close':'el-icon-setting'"/>
            </div>
            <div class="rightPanel-items">
                <slot/>
            </div>
        </div>
    </div>
</template>

<script lang="ts">
    import {Component, Prop, Vue, Watch} from 'vue-property-decorator'
    import {addClass, removeClass} from '@/core/utils'
    import {SettingsModule} from '@/core/store/modules/settings'

    @Component({
        name: 'RightPanel'
    })
    export default class RightPanel extends Vue {
        @Prop({default: false}) private clickNotClose!: boolean
        @Prop({default: 250}) private buttonTop!: number

        private show = false

        get theme() {
            return SettingsModule.theme
        }

        @Watch('show')
        private onShowChange(value: boolean) {
            if (value && !this.clickNotClose) {
                this.addEventClick()
            }
            if (value) {
                addClass(document.body, 'showRightPanel')
            } else {
                removeClass(document.body, 'showRightPanel')
            }
        }

        mounted() {
            this.insertToBody()
        }

        beforeDestroy() {
            const elx = this.$refs.rightPanel as Element
            elx.remove()
        }

        private addEventClick() {
            window.addEventListener('click', this.closeSidebar)
        }

        private closeSidebar(ev: MouseEvent) {
            const parent = (ev.target as HTMLElement).closest('.rightPanel')
            if (!parent) {
                this.show = false
                window.removeEventListener('click', this.closeSidebar)
            }
        }

        private insertToBody() {
            const elx = this.$refs.rightPanel as Element
            const body = document.querySelector('body')
            if (body) {
                body.insertBefore(elx, body.firstChild)
            }
        }
    }
</script>

<style lang="scss">
    .showRightPanel {
        overflow: hidden;
        position: relative;
        width: calc(100% - 15px);
    }
</style>

<style lang="scss" scoped>
    .rightPanel-background {
        position: fixed;
        top: 0;
        left: 0;
        opacity: 0;
        transition: opacity .3s cubic-bezier(.7, .3, .1, 1);
        background: rgba(0, 0, 0, .2);
        z-index: -1;
    }

    .rightPanel {
        width: 100%;
        max-width: 260px;
        height: 100vh;
        position: fixed;
        top: 0;
        right: 0;
        box-shadow: 0px 0px 15px 0px rgba(0, 0, 0, .05);
        transition: all .25s cubic-bezier(.7, .3, .1, 1);
        transform: translate(100%);
        background: #fff;
        z-index: 40000;
    }

    .show {
        transition: all .3s cubic-bezier(.7, .3, .1, 1);

        .rightPanel-background {
            z-index: 20000;
            opacity: 1;
            width: 100%;
            height: 100%;
        }

        .rightPanel {
            transform: translate(0);
        }
    }

    .handle-button {
        width: 48px;
        height: 48px;
        position: absolute;
        left: -48px;
        text-align: center;
        font-size: 24px;
        border-radius: 6px 0 0 6px !important;
        z-index: 0;
        cursor: pointer;
        pointer-events: auto;
        color: #fff;
        line-height: 48px;

        i {
            font-size: 24px;
            line-height: 48px;
        }
    }
</style>
